Electrodeposition of textured nickel on nickel alloy Hastelloy

M. Sugimoto, Ryo Teranishi, S. Ooue, Masashi Mukaida, N. Mori, K. Yamada, H. Fukushima, T. Izumi, Y. Shiohara

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Abstract

We proposed a new method fabricating low-cost and mechanically strong tapes for coated conductors. In this method, Hastelloy ® tape, which is a strong nickel alloy, is plated with a nickel film. A two-step plating was applied to obtain a textured nickel film. In the first step, a strike bath was used in order to plate a nickel film on Hastelloy surface. In the second step, the film was plated in a low cost watts bath. We controlled various plating conditions such as pH-condition, thickness, and current density in the watts bath to fabricate a textured nickel film. The crystal orientation of the nickel films was characterized by an X-ray diffraction method (XRD) with Cu Kα radiation. Preferred orientation of the film depends on pH of watts bath, nickel film thickness, and current density. The optimal conditions for obtaining a textured nickel film are pH of 4.5 for the watts bath, current density of 500 A/m 2 , and thickness of 92 μm. Finally, we succeeded in obtaining nickel films with 96% c-axis orientation.

Original languageEnglish
Pages (from-to)1371-1373
Number of pages3
JournalPhysica C: Superconductivity and its applications
Volume469
Issue number15-20
DOIs
Publication statusPublished - Oct 15 2009

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All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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